Projector for pathological work.



No. 835,431. PATENTED NOV. 6, 1906. H'. A. HUGHES.

PROJECTOR FOR PATHOLOGIGAL WORK.

APPLIUATION .IILED HAY 6.1906.

Q/vi 1511 203% UNITED. STATES PATENT OFFICE. g

HENRY A. HUGHES, OF ST. LOUIS, MISSOURI.

PRouE'cToa'FoR PATHOLQGICAL WORK,

Specification of Letters Patent:

' Patented Nov. 6, 1906.

Application filed May 5,1906. Serial No- 316,431.

To all whom it may concern.-

Be it known that I, HENRY A. HUGHES, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Projectors for Patholo ical Work, of which the following is a specif ication.

This iuyention relates to improvements 1n projectors used, primarily, for pathological work.

In demonstrating to a class the detail of a particular disease by means oflgictures, charts, or the like considerable 'culty is experienced in holding the attention of the students because of the size of the pictures and the distance they are placed from'the view-point. Owing to the size of the class, &c., it has been found impractical to demonstrate to a large class from a particular part of the body.

I privilege.

According to my invention I propose to provide an a paratuswhereby a particular portion of t e human anatomy may be thrown upon a wall many times enlarged, which affords the whole class opportunity to observe the real condition, the enlargement bein such as to enable them to note all the details as if making a microsco ical examination direct from the part of t e body under discussion.

While my invention has as its fundamental feature the furtherance of this particular science, it is not limited to this. For in stance, I may expose a print, object of any description, or printed matter to the reflector and transfer it on an enlarged scale to the wall.

Other objects and advantages will be hereinafter referred to, and particularly pointed out in the claim.

In the drawings, Figure 1 is a perspective view of my improved apparatus. Fig. 2 is a horizontal sectional view of the same. Fig. 3 is a side elevation of the apparatus.

The numeral 1 indicates a box-like structure formed with an singularly-disposed portion 2, formed with an opening 3, surrounded by a felt lining 4. In rear of the structure 1' is a reflector 5, situated relative to the opening 3, whereby an object placed 0 posite said I opening will appear precisely in t e center of Hence but a few enjoy the the reflector. Located at a convenient oint in the box structure is a source of lig t 6,

preferably electric, and a reflector 7 to reflect and focus the light inthe center of the reflector 5. The light from the lamp 6 on the re-' flector 5 reflects the object in line with a lens 8, located in the front of thebox structure. The lens is of such power that the representation of the object reflected in the reflector 5 will be many times enlarged on the wall or screen, as the case might be.

My inventionisparticularly adapted for use in a class-room where clinics are going on to demonstrate diseases of muscles, veins, or tissue structures. For instance, if the diseases of the eye should be the subject under discussion a diseased eye would be placed in the opening 3 and through the instrumentalities described would be thrown up in magnified form, thereby enabling the class or ocutransferring opaque pictures, &c., to a screen it is deemed unnecessary to specifically and elaborately discuss the various light-rays, focusing, &c., in this application. Sufficient to state that what I regard as novel in the apparatus as described are the specific features, such as the reflectors and lens, in combination with an opening by means of which an object may be transferred to the wall.

What I claim is j I In a projecting apparatus, a box-like structure having one 0 its edges angularly disposed with an o ening therein, a yielding packing surroun mg the opening, a ivoted deflector located within the box, a ens located in the front of the box in a straight line from the deflector, a source of light within the box situated between one side thereof and the lens, and a reflector adjacent the source of light to reflect the light at an angle to the first-mentioned reflector, the opening in the angularly-disposed edge of the box and the first-mentioned reflector being so related as to be at an angle to each other whereby an object placed adjacent the opening will be thrown by the reflector and the rays of light thereon to the lens, substantially as described.

In testirnony whereof I have signed my name to thls specification in the presence of two subscribing Witnesses.

HENRY A. HUGHES. Witnesses:

ELIZABETH L. MAQFATE, JNo. Immm. 

